Answer:
h
Step-by-step explanation:
Answer:
6 elephants and 3 kangaroos in the zoo.
Step-by-step explanation:
Number of animals = 9
Number of legs seen = 30
But an elephant has 4 legs, while a kangaroo has 2 legs.
Let the number of elephant be represented by E, and the number of kangaroo by K.
So that,
E + K = 9 .................. 1
4E + 2K = 30 ............. 2
Multiply equation 1 by 2 to have
2E + 2K = 18 ............ 3
Subtract equation 3 from 1
2E = 12
E = 6
Substitute the value of E in equation 1
E + K = 9
6 + K = 9
k = 3
Thus, there were 6 elephants and 3 kangaroos in the zoo.
Answer: Infinitely many solutions
Step-by-step explanation:
Let's take the first equation.
3y + 6x = 12
Now take common,
3( y + 2x ) = 12
So, y + 2x = 4
Lets take 2nd equation
4y + 8x = 16
Take common,
4(y + 2x) = 16
So, y + 2x = 4.
Two lines with same equation have infinitely many solutions. These two equations are the same so there are infinitely many solutions.
Answer:
graph -4/1 and y intercept is 1
Step-by-step explanation: